Abstract:

Semantic Web service discovery is the key task for distributed computing, however, various semantic Web service description languages bring challenges to heterogeneous semantic Web service discovery. This paper proposes a new mechanism for heterogeneous semantic Web service discovery, which is called iXQuery. iXQuery extends XQuery from two folds to support logic reasoning, fuzzy matching as well as structurebased query for heterogeneous semantic Web service discovery. iXQuery supports several kinds of similarity measures through exploiting the external function mechanism. Besides, we build a unified ontology which is used to describe the abstract description information of semantic Web service. The mappings between the unified ontology and each semantic Web language such as OWLS are also built. iXQuery builds several description extractors by using the XQuery userdefined functions to extract description information. Finally, the heterogeneous semantic Web service matchmaker, which is called HiMatcher, is built based on the iXQuery mechanism.

Key words: semantic Web service;XQuery;ontology;heterogeneous;service discovery